JPS6027266Y2 - Automatic opening/closing valve device - Google Patents

Description

[Detailed description of the invention] In this invention, when the liquid pressure in the liquid discharge side passage increases abnormally during liquid passage, the valve device automatically operates to automatically stop the supply of liquid to the liquid discharge side passage. This invention relates to an automatic shut-off valve device.

For example, by fitting a hose to a water faucet using elasticity,
When discharging water from the free end of a hose, if the hose side becomes blocked for some reason and the water discharging is cut off, excessive water pressure will be generated within the hose due to the water that continues to be supplied, and the hose may be destroyed or the faucet may leak. The hose often comes off.

The present invention eliminates the occurrence of such accidents and allows the hose to be used safely, and uses a unique valve seat device to open and close the valve that controls the supply of liquid extremely smoothly and reliably. The present invention is intended to provide an automatic opening/closing valve device devised to enable automatic opening/closing of various liquids such as water faucets, general water pipes, water discharge pipes, and oil supply equipment. It is possible to actually rotate it as a valve device.

That is, the automatic opening/closing valve device, which is a feature of the present invention, has connection ports at both ends to which liquid pipes can be connected, and is divided into two chambers, an upper chamber and a lower chamber, by a partition portion with a communication hole bored inside. A partitioned valve cylinder is formed, an operating chamber is connected to the outside of the valve cylinder, an operating rod is fixed to the free end of the bellows installed in the operating chamber, and the tip of the operating rod is connected to the upper part of the valve cylinder. A hole that projects into the room and communicates between the lower chamber and the inside of the bellows through a communication hole provided in a side wall of the lower chamber, and that the bellows is placed under the action of a coil spring, and that the hole matches the communication hole on the partition part. A valve seat having a valve hole with a larger diameter than the hole in the gasket is installed on the gasket, and a valve seat is formed on the shallow conical slope of the upper surface of the valve seat. A body valve for opening and closing the hole in the gasket is removably mounted on the valve seat, and the valve hole is formed by recessing a hole edge portion facing the protruding direction of the operating rod, Examples thereof will be described in detail below with reference to the drawings.

Both ends of the valve cylinder 1 are connected to liquid pipes t1. Connection port that can be connected to t2 2.
3, one liquid tube t1 is shown as a tap in the drawing.

The inside of the valve cylinder 1 is divided into an upper chamber 1a and a lower chamber 1b via a partition 4 having a communication hole 4a, and an operating chamber 5 is connected to the outside of the valve cylinder 1. The lid body 5a screwed onto the tip opening of the working chamber 5 has an adjustment knob 6 at the outer end approximately in the center.
Adjustment screw shaft 6 with pressure plate 6b attached to the inner end of a
is screwed so that it can move forward and backward.

Reference numeral 7 denotes a bellows housed in the working chamber 5, the fixed side 7a of the bellows 7 being glued to the outer side of the valve cylinder 1, and the pressing plate 6
A base portion 8b of an actuating rod 8 is fixed to the free end substrate 7b facing a, and a tip end 8a of the actuating rod 8 passes through a guide hole 9 and projects into the upper chamber 1a.

Reference numeral 6' denotes a coil spring interposed between the pressing plate 6b and the free end substrate 7b, and the bellows 7 mentioned above is normally placed under the force of the coil spring 6 and compressed as shown in FIG.

Further, a valve seat 10 or 10' is mounted on the partition part 4 in the upper chamber 1a via a gasket 15 provided with a hole 15a that matches the communication hole 4a. A body valve 11 formed in a size that can open and close the hole 15a of the gasket 15 is mounted in a removable manner.

The operating rod 8 is slid by the expansion and contraction movement of the bellows 7, and the operating rod 8 is configured to be able to press the body valve 11 with its tip 8a.

Further, the inside of the bellows 7 and the lower chamber 1b communicate with each other through a communication port 12 provided in the side wall of the valve cylinder 1.

Next, to explain the above-mentioned valve seat 10 or 10' in more detail, the valve seat 10 of the first embodiment shown in FIG.
is provided with a valve hole 10a formed to have a slightly larger diameter than the hole 15a of the gasket 15 described above, the upper surface is formed into a shallow mortar-shaped inclined surface 10b, and the above-mentioned operating rod 8
By slightly recessing the hole edge portion 10c of the valve hole 10a facing the direction of protrusion of the operating rod 8, the overall shape of the valve hole 10a is approximately a bart shape.

Further, 10d is a shallow groove formed as a relief for the tip 8a of the operating rod 8.

The valve seat 10' of the second embodiment shown in FIG.
0a', an inclined surface 10b' and a groove 10d', and has almost the same structure as the valve seat 10 of the first embodiment described above. The shape of the valve hole 10a' is different, and the hand portion of the valve hole 10a' has a semi-elliptical shape.

According to the above configuration, the valve hole 10a or 10a', the hole 15a of the gasket 15, and the communication hole 4 are normally connected as shown in FIG.
a via liquid pipe t0. It communicates with t2, and the liquid is connected to liquid pipe t1.
It flows from the liquid pipe toward the cherry blossom side, and can be discharged from the tip of the liquid pipe t2.

If the liquid pipe t2 side is blocked during this liquid flow, the liquid pressure inside the liquid pipe increases abnormally due to the liquid flow from the liquid pipe side (faucet in the drawing), and the liquid flows into the bellows 7 from the flow hole 12. The amount of liquid increases and the internal pressure against the bellows 7 increases.

Therefore, the bellows 7 stretches against the coil spring 6,
As shown in FIG. 1, the actuating rod 8 is moved back toward the actuating chamber 5, and the pressure on the body valve 11 is released.

Due to this release, the body valve 11 moves through each valve hole 10a of the valve seat 10 or 10' due to its own transferability and the hydraulic pressure from the liquid pipe side.
or 10a', and open the hole 15 of the gasket 15.
'a' is closed to cut off further supply of liquid to the liquid pipe t2.

In this case, each valve seat 1G, 10' is a valve hole 10a.

Shallow mortar-shaped inclined surface 10b, 1 centered at 10a'
0b', the body valve 11 is smoothly transferred and shutoff is performed reliably.

As a result, the blockage on the side of the liquid pipe is released and liquid can be discharged, and when the liquid pressure returns to normal, the pressure inside the bellows 7 also decreases, the bellows 7 is compressed again by the coil spring 6, and this compression causes the actuating rod 8 to moves forward, and as shown in FIG.
a or 10a', and open the hole 15 of the gasket 15.
Open a.

In this release, the valve hole 10a or 10a'
Since the hole edge portion 10c or 10c' is slightly concave so as to have a Bobbert shape or a partially semi-elliptical shape, the rolling of the body valve 11 in the opening direction is resisted by the edge portion of the valve hole. The valve cylinder 1
It is possible to quickly return to a state where fluid can pass through the inside.

When the liquid pipe t2 side is closed and the body valve 11 closes the hole 15a of the gasket 15 due to the liquid pressure on the upper chamber 1a side, the body valve 11 closes the hole 15a of the gasket 15 as shown in FIG.
It passes through the valve hole 10a or 10a' and is pressed against the mouth edge of the hole 15a, and the valve closes when it is slightly bitten into the mouth edge.

In this case, the body valve 11 is supported on the valve seat 10 or 1G' and press-fitted to the mouth edge of the hole 15a, so that the amount of penetration of the body valve 11 into the mouth edge is prevented from becoming excessive.
The gasket 15 will not be unduly deformed.

The amount of penetration of the body valve 11 into the gasket 15 is reduced, in other words, the hole 15 of the gasket 15
Preventing the pressing force of the body valve 11 against the mouth edge of a from becoming excessively large is extremely convenient for rolling the body valve 11 during the subsequent valve opening operation. The rolling of the body valve 11 when the valve is opened is easily and smoothly carried out in conjunction with the fact that a portion of the hole edge of the valve hole 10a or IQa' is recessed as described above.

In other words, if the body valve 11 is placed directly on the gasket 15 without using a valve seat, the body valve 11 will be more deeply wedged into the edge of the hole 15a of the gasket 15, and the body valve 11 will not be crimped when the valve is closed. The power also increases accordingly.

Therefore, the resistance acting on the body valve 11 that separates from the edge of the hole 15a when the valve is opened cannot be ignored, and a large pressure force is required to press the body valve when the valve is opened. However, this device completely eliminates this problem.

In this way, with this device, the maximum impact caused by the sudden pressure change in the liquid pipe t2 on the liquid discharge side, the so-called water hammer phenomenon, can be prevented at the initial stage.For example, when a rubber hose is used, , rubber hose destruction, etc.
It is possible to completely prevent a rubber hose from falling off from a water supply side connection part of a water faucet or the like.

In addition, in the figure, 5b is a ventilation hole bored in the working chamber 5, 13 is a liquid passage hole bored in the upper chamber 1a, 14 is a gasket provided in one of the connection ports 2, and 16 is a tip 8a of the working rod 8. 17 is a screw for mounting the valve barrel 1, and 18 is a mounting hole 18 whose upper end is recessed concentrically with the liquid passage hole 13.
A coil-shaped return spring is installed in the inside of the body valve 11, and the lower end of the spring is in pressure contact with the body valve 11. When the bellows 7 is expanded and the operating rod 8 is retracted, the body valve 11 is moved to the closed position shown in FIG. This return spring 18 has elasticity that biases it toward the side.
may be provided as necessary.

The present invention is as described above, and employs a configuration in which the bellows is located on the side of the passage in the valve cylinder and can be operated by communicating with the liquid pipe on the liquid discharge side connected to the valve cylinder. The system quickly responds to changes in fluid pressure within the liquid discharge pipe, and the body valve can reliably open and close the valve hole, making it extremely effective in ensuring safety during fluid flow.

In addition, in this invention, a valve seat is provided on the gasket, the valve seat is shaped into a shallow mortar, and the edge of the valve hole facing the protruding direction of the operating rod is recessed. The opening/closing operation of the gasket due to transfer is extremely effective, and the automatic opening/closing function can be fully demonstrated.In addition, it prevents unnecessary pressure from the body valve against the edge of the gasket, thereby preventing large deformation and stress. This has the advantage of extending the life of the gasket and ensuring stable valve operation.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; Fig. 1 is a side sectional view of the closed state, Fig. 2 is a side sectional view of the open state, and Fig. 3 shows the first embodiment of the valve seat portion. FIG. 4A is a plan view and a perspective view showing a second embodiment of the valve seat portion, and FIG. 5 is an enlarged view of the main part of FIG. 1. In the figure, 1 is the valve cylinder, 1a is the upper chamber, 1b is the lower chamber, 2, 3
is a connection port, 4 is a partition, 4a is a communication hole, 5 is an operating chamber,
6' is a coil spring, 7 is a bellows, 8 is an operating rod, 8a is its tip, 10.10'' is a valve seat, 10a, 10''
is the valve hole, 10b, 10b' are the inclined surfaces, 10c, IOC'
11 is the hole edge portion of the valve hole, 11 is the body valve, 12 is the communication port, 15 is the gasket, 15a is the hole, and 'ttt2 is the liquid pipe.

Claims (1)

[Scope of utility model registration request] A valve cylinder is formed which has connection ports at both ends to which liquid pipes can be connected, and which is partitioned into two chambers, an upper chamber and a lower chamber, by a partition portion with a communication hole bored inside. An operating chamber is connected to the outside of the bellows, and an operating rod is fixed to the free end of the bellows installed in the operating chamber, and the tip of the operating rod projects into the upper chamber, so that the lower chamber and the inside of the bellows are connected to each other. are communicated through a communication port provided in the side wall of the lower chamber, while
The bellows is placed under the action of a coil spring, a gasket with a hole that matches the communication hole is mounted on the partition, and a valve seat having a valve hole with a larger diameter than the hole in the gasket is mounted on the gasket. The upper surface of the valve seat is formed into a shallow mortar-shaped inclined surface, and a ball valve for opening and closing the hole in the gasket is removably mounted on the valve seat. An automatic opening/closing valve device characterized in that a hole edge portion facing the protruding direction of the operating rod is recessed.